Fig. 4From: Comparative proteomic analysis reveals that the Heterosis of two maize hybrids is related to enhancement of stress response and photosynthesis respectivelyHeat map of NAPs involved in stress factors. The NAPs grouped into stress were visualized using MapMan software. Each square and color indicated the fold change of a NAP in hybrids when compared with the parents. Blue and red indicate a decrease and increase, respectively, in fold change compared with the parents, and gray indicates unidentified. MAPK, mitogen-activated protein kinase; PR, pathogenesis-relatedBack to article page